Reliable F1FR – 300 Quick Start Manual

Model F1FR – 300 QREC
300 psi (20,7 bar) Rated

Sprinkler Types

• Extended Coverage Pendent (QREC)
• Extended Coverage
(QREC-9)
• Extended Coverage
(QREC)
• Extended Coverage Recessed Horizontal Side-
wall (QREC-9)
For Model F1FR-300 EC ½" K 5.6 (80) Sprinkler Types refer
to Bulletin 028 for technical specifications and approvals.

Approval Organizations

1. Underwriters Laboratories Inc.
2. UL Certified for Canada
3. NYC MEA 258-93-E

ULI Listing Category

Sprinklers, Automatic & Open
Quick Response Sprinklers
ULI Guide Number
VNIV

Product Description

Reliable Models F1FR-300 QREC and F1FR-300 QREC-9
pendent and horizontal sidewall sprinklers are high pressure
rated automatic sprinklers which can handle a maximum
service pressure of 300 psi (20,7 bar).
These Models are quick response sprinklers which utilize
a 3.0mm frangible glass bulb. These sprinklers have dem-
onstrated response times in laboratory tests which are five
times faster than standard response sprinklers. This quick
response enables Model F1FR-300 QREC and QREC-9
sprinklers to apply water to a fire much faster than standard
sprinklers of the same temperature rating.
The glass bulb contains an accurately controlled amount
of special fluid hermetically sealed inside a precisely man-
ufactured glass capsule. This glass bulb is specially con-
structed to provide fast thermal response. Other sprinkler
parts are made of brass, copper or beryllium nickel.
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Horizontal Sidewall
Recessed Pendent
Model F1FR – 300
Quick Response Extended
Coverage Sprinklers
300 psi (20,7 bar) Rated
QREC Pendent
QREC-9 Horizontal
Sidewall
At normal temperatures, the glass bulb contains fluid in
both the liquid and vapor phases. The vapor phase can be
seen as a small bubble. As heat is applied, the liquid ex-
pands, forcing the bubble smaller and smaller as the liquid
pressure increases. Continued heating forces the liquid to
push out against the bulb, causing the glass to shatter, op-
erating the waterway and allowing the deflector to distribute
the discharging water.
The temperature rating of the sprinkler is identified by the
color of the glass bulb.

Application

The most common applications for Model F1FR-300
QREC and QREC-9 Sprinklers will be in fire protection sys-
tems for high rise buildings where a quick response rating is
required and the pressure entering the sprinkler system is in
excess of 175 psi (12 bar). The use of these sprinklers will
provide the opportunity to reduce or eliminate the need for
pressure reducing valves.
Bulletin 159 August 2021
Recessed
QREC Pendent
Recessed QREC-9
Horizontal Sidewall